When it comes to fertilization, many flower friends want to buy flower fertilizer from the flower market to help plants improve their growth speed at the first time. In fact, there is no need to spend that wronged money, because we can actually find many small things suitable for raising flowers in our life. They contain sufficient nutrients and have good growth promotion effect. For example, these "black skins" are good fertilizers

（1） Willow bark

Willow bark is naturally the bark falling off the willow. Now it's winter and the willow has stopped growing. At this time, we can collect some fallen willow bark and take it home to raise flowers. Willow has strong vitality and often grows by the river. It can be said that it lives in water. In fact, it is entirely due to the fact that it contains a salicylic acid substance, which can accelerate cell division and promote growth

Usage:

Willow bark grows outdoors, so we need to treat it before using it. Put it in a place with strong sunlight for sterilization and remove excess bacterial impurities. After treatment, we can soak the willow bark in water for fermentation. We can take the supernatant to water the flowers in about 2 months. Remember that when watering the flowers, we also need to add water in a proportion of 50 times, So as not to burn the flower root

（2） Pine bark

When it comes to willow bark, it is natural not to mention pine bark. Pine is also a very common plant, but pine needles and pine bark will fall off in winter. Taking these things to maintain flower plants can supplement nutrients and enhance soil permeability, so as to make plants and flowers grow more vigorously

Usage:

Pine bark also needs to be sterilized before use, so as not to affect the later growth. After treatment, we can directly pad the pine bark at the bottom of the flower pot, or mix it with the soil. In both ways, we can help it slowly release nutrients and help the soil enhance air permeability, so as to improve the vigorous growth of plants and flowers

（3） Plant ash

Plant ash is a kind of thing that looks black, but because it is made by firing, it contains rich nutrients inside. We can collect some weeds and fallen leaves and burn them into plant ash

Usage:

After the production of plant ash, we can use it to raise flowers. We can spread it on the surface of the soil of the flower pot and slowly ferment and precipitate nutrients. We can also mix it with the soil to increase drainage and permeability. The results of both methods are good

These black skins are much more effective for raising flowers than fertilizer. Have you ever used them